Seed drying device

Abstract

The invention provides a seed drying device, and belongs to the field of seed treatment. The problems of seed adhesion and low drying efficiency of traditional drying equipment are solved. The driving assembly comprises a rotary supporting part and a plurality of air ducts arranged on the rotary supporting part; the drying bin assembly comprises a drying bin body and a redirection material distribution part arranged on the peripheral wall in the drying bin body, and the side, away from the bottom of the drying bin body, of the redirection material distribution part and the side, close to the bottom, of the redirection material distribution part are faces with certain inclination angles; the outlet end of the air duct faces the bottom of the drying bin body, and when the air outlet part outputs air, air in the air duct is injected to be blown out from the air duct to the bottom of the drying bin body and then reversely flows in the direction away from the bottom along the wall face of the drying bin body to drive seeds to move upwards. And the redirection material distribution part is used for changing the seed movement trend to face the bottom through a surface with an inclination angle when rotating along with the drying bin body. The device is mainly used for drying coated seeds.

Description

Technical Field

[0001] The invention belongs to the field of seed processing, and in particular relates to a seed drying device. Background Art

[0002] Seed coating is a technology that evenly wraps pesticides, fertilizers, trace elements and other substances on the surface of seeds. It can not only improve the germination rate and emergence rate of seeds, enhance the stress resistance of seedlings, promote the growth and development of seedlings, and increase the yield and quality of crops, but also save labor, improve sowing efficiency, reduce pesticide pollution, and promote the sustainable development of agriculture.

[0003] After coating, the seeds generally need to be dried. Traditional drying equipment is mostly horizontal rotating type. When drying the seeds, the seeds form a structure similar to a moving bed due to the rotation, which will reduce the contact area with the drying airflow and reduce the relative movement between seeds. Therefore, the problem of seed adhesion and low drying efficiency cannot be effectively solved. Summary of the invention

[0004] In view of this, the present invention aims to provide a seed drying device to solve the problems of seed adhesion and low drying efficiency in traditional drying equipment.

[0005] To achieve the above object, the present invention adopts the following technical solution: a seed drying device, comprising: The driving assembly includes a rotating support part, a plurality of air ducts arranged on the rotating support part, an air outlet part arranged in each air duct for outputting air to an outlet end of the air duct, and a heat source part coupled to the air duct; A drying bin assembly comprises a drying bin body and a redirecting and distributing portion arranged on the inner peripheral wall of the drying bin body, wherein the drying bin body is axially slidably connected to the rotating support portion by an elastic member, the outlet end of the air duct faces the bottom of the drying bin body, and the redirecting and distributing portion has a surface with a certain inclination angle on the side away from the bottom of the drying bin body and the side close to the bottom; wherein the outlet end of the air duct faces the bottom of the drying bin body, and the air outlet portion is used to guide the gas in the air duct to be blown out from the air duct to the bottom of the drying bin body when outputting wind, and then flow back along the wall surface of the drying bin body away from the bottom to drive the seeds to move upward, and the redirecting and distributing portion is used to change the movement trend of the seeds toward the bottom through the surface with an inclination angle when the drying bin body rotates.

[0006] Furthermore, the driving assembly also includes a motor and a reducer, the rotating end of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the rotating support part.

[0007] Furthermore, the drying device further comprises a support assembly, the rotation support portion is rotatably connected to the support assembly, and the motor and the reducer are both connected to the support assembly.

[0008] Furthermore, the driving assembly also includes a heat collecting part and an ejection part. The heat collecting part is arranged at the outlet end of all the air ducts to collect the wind and then output it. The ejection part is sleeved on the outer wall of the ejection part and has a certain gap. The heat collecting part is located as a whole in the middle of the ejection part, wherein the gas at the outlet end of the heat collecting part is used to eject the gas in the ejection part.

[0009] Furthermore, the heat collecting portion is overall conical, with the opening side located at the end with a smaller diameter and arranged toward the bottom of the drying chamber body.

[0010] Furthermore, the drying bin body as a whole is a barrel-shaped structure with an opening on one side away from the ground and an arc-shaped bottom.

[0011] Furthermore, the drying bin body is provided with a discharge port near the bottom side and a sliding fitting part away from the bottom side, the sliding fitting part is slidably fitted with the rotating support part, a discharge control part is provided at the discharge port, the discharge control part is connected to the discharge drive part, and the discharge drive part is used to control the discharge control part to block or open the discharge port.

[0012] Furthermore, two ends of the elastic member are respectively connected to the sliding fitting portion and the rotating support portion to limit the sliding stroke of the drying chamber body within a certain distance.

[0013] Furthermore, a lubricating medium is provided on the sliding matching surfaces of the rotation support portion and the sliding matching portion.

[0014] Furthermore, a dust cover is sleeved on the outer sides of the sliding matching surfaces of the rotation support portion and the sliding matching portion.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. When the drying bin assembly of the device rotates, due to the centrifugal force, the seeds will move upward along the inner wall of the drying bin assembly. At the same time, because the air outlet blows toward the bottom of the drying bin body, it will flow back upward along the inner wall of the drying bin body, driving the seeds to move upward along the wall surface. At the same time, the seeds will have a tendency to move toward the periphery of the drying bin body under the action of centrifugal force. Under the action of gas backflow, the movement tendency of the seeds will be intensified and flow back upward along the wall surface. At the same time, when the drying bin body rotates, the redirecting material distribution part will change the movement direction of the seeds downward. The seeds form a movement area with a certain range in the two states, and the seeds in this movement area are almost disordered under the combined influence of multiple movement trends, and can fully contact with the airflow. At the same time, the adhered seeds can be effectively separated in the disordered movement, thereby solving the problems raised in the background technology; 2. This device discharges air through the air outlet and forms an induced effect, increasing the air intake of the air duct. After the gas is heated by the heat source, it is blown out from the outlet end of the air duct and reacts with the bottom of the drying chamber body to flow back from the surrounding wall, which can play a good role in guiding the seeds and drying the seeds at the same time. In conjunction with the heat collection part, it can effectively strengthen the heat radiation before the gas is blown out, increase the temperature of the wind, and thus improve the drying efficiency; 3. Through the setting of the ejection part, the device can increase the wind flow rate under the premise of increasing the temperature, making the movement effect of the seeds more disordered, which is beneficial to reduce the adhesion phenomenon and improve the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of a seed drying device according to the present invention; Figure 2 The present invention Figure 1 A partial enlarged view of part C; Figure 3 A top view of a seed drying device according to the present invention; Figure 4 The present invention Figure 3 AA section view; Figure 5 The present invention Figure 3 BB section view; Figure 6 The present invention Figure 5 A partial enlarged view of part D; Figure 7 A schematic diagram of the connection relationship of some parts of the drive assembly of the present invention; Figure 8 A schematic diagram of the connection relationship between the heat collecting part and the ejecting part according to the present invention from a first viewing angle; Fig. 9 A schematic diagram of the connection relationship between the heat collecting part and the ejecting part according to the present invention from a second viewing angle; Fig.10 It is a structural schematic diagram of the drying chamber assembly of the present invention; Fig.11 This is a circulating wind field diagram of the present invention.

[0017] Driving assembly 1; motor 1-1; reducer 1-2; rotating support part 1-3; air duct 1-4; air outlet part 1-5; heat source part 1-6; heat collecting part 1-7; ejection part 1-8; elastic member 1-9; supporting assembly 2; drying bin assembly 3; drying bin body 3-1; redirecting and distributing part 3-2; discharging port 3-3; sliding fitting part 3-4; discharging control part 3-5; discharging driving part 3-6. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0019] It should be noted that the descriptions of the present invention regarding directions such as "left", "right", "left side", "right side", "upper", "lower", "top", "bottom", etc. are all defined based on the relationship between the orientations or positions shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the structure described must be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Referring to the accompanying drawings, this embodiment is described, a seed drying device comprising: The driving assembly 1 includes a rotating support part 1-3, a plurality of air ducts 1-4 arranged on the rotating support part 1-3, an air outlet part 1-5 arranged in each air duct 1-4 for outputting air to the outlet end of the air duct 1-4, and a heat source part 1-6 coupled to the air duct 1-4; the rotating support part 1-3 is specifically a rotating shaft. The setting of the rotating shaft here not only provides a rotating driving force for the drying bin assembly 3, but also needs to provide a relative sliding path for the drying bin assembly 3. Therefore, the rotating support part 1-3 needs to have a certain cross-sectional shape so that when it rotates, it can drive the drying bin assembly 3 to rotate synchronously without affecting the relative sliding between the two. In the present application, the cross-section of the rotating support part 1-3 adopts two ellipses intersecting to form a special-shaped shaft with a smooth transition surface, and its cross-sectional shape is the same as that of the rotating support part 1-3. Fig.10The opening shape of the sliding matching part 3-4 that cooperates with it is the same. After the two are matched, the rotating support part 1-3 can drive the sliding matching part 3-4 to rotate through the cooperation, and at the same time, the two can slide smoothly along the axial direction. The material of the rotating support part 1-3 is reasonably selected according to the actual situation, which needs to meet the driving strength. At the same time, the surface should be smoothed to reduce the friction coefficient.

[0022] As for the air duct 1-4, the present application adopts the method of opening a channel in the rotating support part 1-3 for setting. According to actual needs, other forms can also be adopted. Specifically, the air duct 1-4 is set to two and arranged in a circular symmetry relative to the axis of the rotating support part 1-3. The inlet end of the air duct 1-4 is set at a relatively high position, preferably inside the drying bin body 3-1 or near the feed port at the upper end of the drying bin body 3-1. The outlet end of the air duct 1-4 is set inside the drying bin body 3-1 and arranged toward the bottom of the drying bin body 3-1, so that the wind can be blown to the bottom of the drying bin body 3-1 and then flow back upward along the wall of the drying bin body 3-1.

[0023] For the air outlet 1-5, a fan or a nozzle with an integrated air pump can be used. Any component capable of discharging air can be set according to actual needs, and the corresponding connection method can be reasonably selected according to actual needs. The air outlet of the air outlet 1-5 needs to be coaxially arranged in the air duct 1-4, so that when the high-pressure gas is ejected, it can form an ejection effect on the gas located at the rear of the air duct 1-4, thereby increasing the air intake at the inlet end of the air duct 1-4.

[0024] The heat source part 1-6 can be specifically arranged in the air duct 1-4 or at the outlet end of the air duct 1-4. The corresponding heat source form is selected according to the arrangement position. For example, if it is arranged in the air duct 1-4, the coil part of the hot wire can be selected on the inner wall of the air duct 1-4, or it can be arranged at the outlet end of the air duct 1-4 in the form of a hot coil wire.

[0025] The drive assembly 1 also includes a motor 1-1 and a reducer 1-2, wherein the rotating end of the motor 1-1 is connected to the input end of the reducer 1-2, and the output end of the reducer 1-2 is connected to the rotating support 1-3. The rotating end of the motor 1-1 is connected to the input end of the reducer 1-2 through a coupling, and the output end of the reducer 1-2 is connected to the rotating support 1-3 through a coupling. The rotating support 1-3 is configured in the form of a rotating shaft. Specifically, when connected to the support assembly 2, the connecting portion between the rotating support 1-3 and the support assembly 2 is configured as an axis with a circular cross-sectional shape. This section of the axis is connected to the coaxial bearing seat of the support assembly 2, and the selection of the bearing seat should be able to resist axial force. In order to limit the sliding path of the sliding fitting part 3-4 and the drying chamber body 3-1, two bosses spaced a certain distance apart along the axial direction are arranged on the rotating support part 1-3, the sliding fitting part 3-4 is slidably arranged between the two bosses, and the elastic member 1-9 is arranged between the sliding fitting part 3-4 and the boss located on the lower side. When the elastic member 1-9 is in a non-compressed state, the upper end face of the sliding fitting part 3-4 abuts against the lower end face of the boss located on the upper side.

[0026] The driving assembly 1 also includes a heat collecting part 1-7 and an ejection part 1-8. The heat collecting part 1-7 is arranged at the outlet end of all the air ducts 1-4 to collect the wind and then output it. The ejection part 1-8 is sleeved on the outer wall of the ejection part 1-8 and has a certain gap. The heat collecting part 1-7 is located as a whole in the middle of the ejection part 1-8, wherein the gas at the outlet end of the heat collecting part 1-7 is used to eject the gas in the ejection part 1-8.

[0027] The heat collecting part 1-7 is tapered as a whole, with the opening side located at the end with a smaller diameter and arranged toward the bottom of the drying bin body 3-1. As for the arrangement of the heat collecting part 1-7, it is tapered and cylindrical, and the inner wall of the side with a larger opening diameter is provided with an internal thread, which is connected to the end of the rotating support part 1-3 and accommodates the outlet end of all the air ducts 1-4 inside, so that the heat of a part of the air flow will be radiated on the inclined wall surface of the heat collecting part 1-7, forming a scale effect, and a larger air volume and a higher temperature can be obtained when the gas is blown out. After the wind is blown out, due to the arrangement of the ejection part 1-8, the gas in the ejection part 1-8 in the back pressure area can be ejected and then the flow rate can be accelerated to impact the bottom of the drying bin body 3-1, which will drive the seeds gathered at the bottom of the drying bin body 3-1 to the rear side. Since the bottom wall of the drying bin body 3-1 is arc-shaped, the seeds will crawl upward along the wall surface. In the relative movement, the drying of the seeds can be accelerated, while the movement of the seeds is intensified and the bonding rate is reduced. The ejection part 1-8 is specifically configured as a hollow tube, which is sleeved on the outside of the heat collecting part 1-7.

[0028] The drying bin assembly 3 comprises a drying bin body 3-1 and a redirecting and distributing portion 3-2 arranged on the inner peripheral wall of the drying bin body 3-1, wherein the drying bin body 3-1 is axially slidably connected to the rotating support portion 1-3 by an elastic member 1-9, the outlet end of the air duct 1-4 faces the bottom of the drying bin body 3-1, and the redirecting and distributing portion 3-2 has a surface with a certain inclination angle on the side away from the bottom of the drying bin body 3-1 and the side close to the bottom; wherein the outlet end of the air duct 1-4 faces the bottom of the drying bin body 3-1, and the air outlet portion 1-5 outputs wind and is used to guide the gas in the air duct 1-4 to be blown out from the air duct 1-4 to the bottom of the drying bin body 3-1, and then flow back along the wall surface of the drying bin body 3-1 in a direction away from the bottom to drive the seeds to move upward, and the redirecting and distributing portion 3-2 is used to change the movement trend of the seeds toward the bottom through the surface with an inclination angle when the drying bin body 3-1 rotates. The redirecting material distribution part 3-2 can be an inclined arc plate, the upper arc surface is conducive to the added seeds falling downward when rotating, and the lower arc surface can change the movement trend of the seeds to downward through relative movement with the seeds when rotating. The specific arc parameters are set according to actual conditions and need to be set in a way that is conducive to reducing the seed wear rate. Through the above settings, the redirecting material distribution part 3-2 is conducive to falling and redirecting the materials below.

[0029] In this embodiment, the drying device further includes a support assembly 2, the rotating support portion 1-3 is rotatably connected to the support assembly 2, and the motor 1-1 and the reducer 1-2 are both connected to the support assembly 2. The support assembly 2 is provided to provide a supporting function. In the arrangement of this device, a certain counterweight needs to be provided on the support assembly 2, which is fixed in the working position by anchor bolts. The support assembly 2 needs to meet the structural strength and meet the vibration generated by the up and down floating of the support and the drying chamber body 3-1.

[0030] In this embodiment, the drying bin body 3-1 is a barrel-shaped structure with an opening on one side away from the ground and an arc-shaped bottom. This structural setting is conducive to the seeds moving to the side under the action of wind and centrifugal force, then crawling along the wall and being thrown out obliquely during rotation.

[0031] In this embodiment, the drying bin body 3-1 is provided with a discharge port 3-3 near the bottom side, and a sliding fitting part 3-4 is provided on the side away from the bottom. The sliding fitting part 3-4 is slidably fitted with the rotating support part 1-3. A discharge control part 3-5 is provided at the discharge port 3-3. The discharge control part 3-5 is connected to the discharge driving part 3-6. The discharge driving part 3-6 is used to control the discharge control part 3-5 to block or open the discharge port 3-3.

[0032] In this embodiment, two ends of the elastic member 1-9 are respectively connected to the sliding fitting portion 3-4 and the rotating support portion 1-3 to limit the sliding stroke of the drying chamber body 3-1 within a certain distance.

[0033] In this embodiment, a lubricating medium is provided on the sliding matching surfaces of the rotating support part 1-3 and the sliding matching part 3-4. The lubricating medium may be grease to ensure the lubricity of the sliding and reduce the failure rate.

[0034] In this embodiment, a dust cover is set outside the sliding matching surface of the rotating support part 1-3 and the sliding matching part 3-4. The function of the dust cover is to prevent the lubricating medium from being contaminated and becoming ineffective. Specifically, a rubber tube can be selected. After the two ends are fixed respectively, the middle has a certain degree of elasticity, which can ensure good sliding sealing when the sliding matching part 3-4 moves.

[0035] When in use, the operating motor 1-1 drives the reducer 1-2 to operate, thereby driving the rotating support part 1-3 to rotate. The rotation of the rotating support part 1-3 will drive the sliding matching part 3-4 to rotate. The rotation of the sliding matching part 3-4 will drive the drying bin body 3-1 to rotate. The seeds located inside the drying bin body 3-1 will move synchronously due to the action of centrifugal force. The heat source part 1-6 and the air outlet part 1-5 are operated synchronously. The air outlet part 1-5 will emit gas, and the gas from the air duct 1-4 will be blown out from the outlet end of the air duct 1-4. When all the gases coming out of the air duct 1-4 are collected in the heat collecting part 1-7 and blown out from the open end of the heat collecting part 1-7 after heat radiation, the gas in the ejection part 1-8 will be ejected through the ejection effect, so as to obtain a larger air output, further strengthening the movement trend of the seeds to the circumferential side, so that under the action of centrifugal force and wind, and at the same time due to the rotation of the drying bin body 3-1, the seeds form an oblique throwing effect after crawling along the peripheral wall, thereby increasing the relative movement with the gas.

[0036] Some seeds will move upward to the height of the redirecting material distribution part 3-2. When the redirecting material distribution part 3-2 rotates with the drying bin body 3-1, the lower arc surface faces the seeds, so that the seeds can move downward along the inclined surface, thereby ensuring that the seeds return to the bottom of the drying bin body 3-1 and continue to participate in the movement. In this process, the movement trend of the seeds is affected by multiple forces, which can strengthen the relative movement between the seeds in the disordered movement, thereby reducing the adhesion rate between the seeds. At the same time, due to the amplitude of the up and down movement of the seeds, the drying bin body 3-1 will vibrate under the action of the gravity and movement trend of the seeds and the elastic force provided by the elastic member 1-9 as a spring during the rotation, thereby further improving the relative movement of the seeds and reducing the phenomenon of seed adhesion. At the same time, the movement of wind between the seeds with gaps can achieve a better drying effect.

[0037] After the wind flows upward, it will move to the inlet area of ​​duct 1-4, forming a circulating wind field. Fig.11 As shown by the arrows, the heat can be further clustered to reduce heat loss and power consumption, which helps to improve economy.

[0038] In the above description, the sensors, controllers and control programs that may be involved are all existing technologies and will not be described in detail.

[0039] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A seed drying device, characterized in that: include: A driving assembly (1) comprises a rotating support portion (1-3), a plurality of air ducts (1-4) arranged on the rotating support portion (1-3), an air outlet portion (1-5) arranged in each air duct (1-4) for outputting air to an outlet end of the air duct (1-4), and a heat source portion (1-6) coupled to the air duct (1-4); A drying bin assembly (3) comprises a drying bin body (3-1) and a redirecting material distribution portion (3-2) arranged on an inner peripheral wall of the drying bin body (3-1), wherein the drying bin body (3-1) is slidably connected to a rotating support portion (1-3) along an axial direction via an elastic member (1-9), an outlet end of the air duct (1-4) faces the bottom of the drying bin body (3-1), and the redirecting material distribution portion (3-2) has a certain inclination angle on a side away from the bottom of the drying bin body (3-1) and a side close to the bottom. wherein the outlet end of the air duct (1-4) faces the bottom of the drying bin body (3-1); the air outlet portion (1-5) is used to guide the gas in the air duct (1-4) to be blown out from the air duct (1-4) to the bottom of the drying bin body (3-1) when outputting air, and then flow back along the wall surface of the drying bin body (3-1) in a direction away from the bottom to drive the seeds to move upward; the redirecting material distribution portion (3-2) is used to change the movement trend of the seeds to the bottom through the surface with an inclination when the drying bin body (3-1) rotates.

2. A seed drying device according to claim 1, characterized in that: The driving assembly (1) further comprises a motor (1-1) and a reducer (1-2); the rotating end of the motor (1-1) is connected to the input end of the reducer (1-2); and the output end of the reducer (1-2) is connected to the rotating support part (1-3).

3. A seed drying device according to claim 2, characterized in that: The drying device further comprises a support assembly (2), the rotating support portion (1-3) is rotatably connected to the support assembly (2), and the motor (1-1) and the reducer (1-2) are both connected to the support assembly (2).

4. A seed drying device according to claim 1, 2 or 3, characterized in that: The driving assembly (1) further comprises a heat collecting portion (1-7) and an ejection portion (1-8); the heat collecting portion (1-7) is arranged at the outlet ends of all the air ducts (1-4) for collecting wind and then outputting it; the ejection portion (1-8) is sleeved on the outer wall of the ejection portion (1-8) with a certain gap; the heat collecting portion (1-7) is located as a whole in the middle of the ejection portion (1-8); and the gas at the outlet end of the heat collecting portion (1-7) is used to eject the gas in the ejection portion (1-8).

5. A seed drying device according to claim 4, characterized in that: The heat collecting portion (1-7) is tapered as a whole, with the opening side being located at the end with a smaller diameter and arranged toward the bottom of the drying chamber body (3-1).

6. A seed drying device according to claim 1, 2, 3 or 5, characterized in that: The drying bin body (3-1) is a barrel-shaped structure with an opening on one side away from the ground and an arc-shaped bottom.

7. A seed drying device according to claim 6, characterized in that: The drying bin body (3-1) is provided with a discharge port (3-3) on the side close to the bottom, and a sliding fitting portion (3-4) is provided on the side away from the bottom; the sliding fitting portion (3-4) is slidably fitted with the rotating support portion (1-3); a discharge control portion (3-5) is provided at the discharge port (3-3); the discharge control portion (3-5) is connected to a discharge drive portion (3-6); and the discharge drive portion (3-6) is used to control the discharge control portion (3-5) to block or open the discharge port (3-3).

8. A seed drying device according to claim 7, characterized in that: The two ends of the elastic member (1-9) are respectively connected to the sliding matching portion (3-4) and the rotating support portion (1-3) to limit the sliding stroke of the drying bin body (3-1) within a certain distance.

9. A seed drying device according to claim 7, characterized in that: A lubricating medium is provided on the sliding matching surfaces of the rotating support portion (1-3) and the sliding matching portion (3-4).

10. A seed drying device according to claim 9, characterized in that: A dust cover is sleeved on the outer sides of the sliding matching surfaces of the rotating support part (1-3) and the sliding matching part (3-4).

Images